Bump idna from 2.8 to 3.7

Bumps [idna](https://github.com/kjd/idna) from 2.8 to 3.7.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v2.8...v3.7)

---
updated-dependencies:
- dependency-name: idna
  dependency-type: direct:production
...

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Author: dependabot[bot]

pyproject.toml

@@ -39,7 +39,7 @@ dependencies = [
     "h5py<4.0.0",
     "html5lib==1.0b9",
     "hyperopt==0.2.4",
-    "idna==2.8",
+    "idna==3.7",
     "isort==4.3.4",
     "joblib>=1.2.0",
     "le-pycaption==2.2.0a1",